这条错误信息是什么意思？

提示所有对该动态链接库的调用都被忽略
不知道你设置了什么，很多情况都会提示这个警告的
以下是MSDN的原解释：
all references to "dynamic-link library" discarded by /OPT:REFThe linker discarded all packaged functions that referenced exports in dynamic-link library. As a result, dynamic-link library and its import library are unneeded.